Unit 1 Animal Education 1
Unit 2 Bargains 10
Unit 3 Blood Testing 18
Unit 4 Hey，I m the customer 26
Unit 5 Life on Other Planets? Of Course! 35
Unit 6 Twilight Robbery on the Green 44
Unit 7 Survival of the Fittest 52
单元自测题（I）（Unit 1-Unit 7） 57
Unit 8 What Are Computers? 69
Unit 9 How do Homing Pigeons Find Home? 76
Unit 10 Walking in Space 84
Unit 11 Do We Need Extra Vitamins? 91
Unit 12 The Consumer 101
Unit 13 Women and Tobacco 108
Unit 14 Water in Industry 117
单元自测题（II）(Unit 8-Unit 14) 125
Unit 15 Sampling the Market 136
Unit 16 Getting the Most from the Micro Boom 147
Unit 17 Most Important Thing You Can Do For Your Child 155
Unit 18 By Their Colours You Shall Know Them 163
Unit 19 Beware the Dirty Seas 172
Unit 20 Our Disappearing Wildlife 181
Unit 21 Never Be Nervous Again 190
单元自测题（IIII）(Unit 15-Unit 21) 198
Unit 22 Future Directions 208
Unit 23 Future Tech Is Now 218
Unit 24 Call for Atom Plant Probe 227
Unit 25 Save Our Seals and Whales 236
Unit 26 Are These the Best Years of Your Life? 244
Unit 27 Family Hold Vigil at Gates of Changi Jail 252
Unit 28 the World of Microbes 260
单元自测题（IV）(Unit 22-Unit 28) 268
Unit 29 Foreign Exchange and Foreign Exchange Control 277
Unit 30 The Value and Cost of Information 287
Unit 31 Fighting the War Against EDP Crime 296
Unit 32 Traitor Blake Can Profit from Memoir 306
Unit 33 You Call This a Good Economy? 315
Unit 34 Gunmen Slaughter Greek Pilgrims at Cairo Hotel 323
Unit 35 The Future of International Trade 332
单元自测题（V）(Unit 29-Unit 35) 341
Unit 36 The World Bank and the International Monetary Fund 348
Unit 37 Cosmic Close-ups 359
Unit 38 Pollution Is a Dirty Word 370
Unit 39 More People and More Products 379
Unit 40 Keeping Food on the Table 388
Unit 41 Judge Halts TV Interview with Major 397
Unit 42 Smart Lifts Take Japan s Managers Upmarker 406
单元自测题（VI）(Unit 36-Unit 42) 413
模拟试题（一） 422
模拟试题（二） 437
参考答案 456